Regarding the lack of smooth scrolling in DN1 - Todd Replogle didn't use something resembling Adaptive Tile Refresh until two series later, in Duke Nukem 2.

(I actually think DN1 was running an improved version of the earlier Dark Ages engine, which would get used again in Cosmo's Cosmic Adventure, but we'd have to ask Todd Replogle directly to get confirmation of that fact.)_________________A broken clock is still right twice a day.